Electric hot air furnace



June 25, 1963 T. s MARTIN 3,095,497

ELECTRIC HOT AIR FURNACE F11ed Ma 8 1962 THOMAS STANEY MARTIN ATTORNEfrom and parauel to said Teal late, and a plurality of hofizontallyextending Shield nlembers interconnecting the eri hera1 edge ortions ofrelated front and rear plates and having their ends in Spaced Telationto 0vide air inlet O enings in the 10Wer and under Sides of each of saidShe11S, and air outlet Slots in the upper and top Sides of each of saidshells' Z. A furnace as deined in claim 1 Wherein the lats and Shieldsof said shells are nade of stainless steel.

I{eferences Cite{l in the me of this atent Z,676,238 z,7z4,044

UNITED STATES PATENTS Ness Iune ll, 1929 Hinds Ian. 4 1949 Worden an. Z949 Suhr Dec. 23, 19jz C0ates APT' 20, 194 Cam ben 1Iov. 1j, 1955FOREIGN PATENTS Great Britain Nov 8 193S

1. AN AIR FURNACE OF THE CHARACTER DESCRIBED COMPRISING A VERTICALHOUSING HAVING A LOWER CHAMBER AND A VERTICALLY EXTENDING UPPER CHAMBERTHEREIN, AN AIR INLET PASSAGE IN SAID HOUSING FOR SAID LOWER CHAMBER, ABLOWER MOUNTED IN SAID LOWER CHAMBER FOR IMPELLING AIR INTO SAID UPPERCHAMBER, SAID HOUSING HAVING A PASSAGE INTERCONNECTING SAID UPPER ANDLOWER CHAMBERS, SAID HOUSING HAVING AN AIR OUTLET OPENING IN THE UPPEREND THEREOF FOR SAID UPPER CHAMBER, A PLURALITY OF GROUPS OF VERTICALLYSPACED ELECTRICAL HEATING UNITS MOUNTED IN SAID UPPER CHAMBER, EACHGROUP OF HEATING UNITS EXTENDING ANGULARLY UPWARDLY FROM POINTS ADJACENTONE OF THE SIDE WALLS OF SAID UPPER CHAMBER TO POINTS ADJACENT THE OTHEROF THE SIDE WALLS OF SAID UPPER CHAMBER, A SHELL ENCOMPASSING EACH OFSAID GROUPS OF HEATING UNITS, SAID SHELLS EACH COMPRISING A VERTICALLYEXTENDING REAR PLATE, A VERTICALLY EXTENDING FRONT PLATE SPACED FROM ANDPARALLEL TO SAID REAR PLATE, AND A PLURALITY OF HORIZONTALLY EXTENDINGSHIELD MEMBERS INTERCONNECTING THE PERIPHERAL EDGE PORTIONS OF RELATEDFRONT AND REAR PLATES AND HAVING THEIR ENDS IN SPACED RELATION TOPROVIDE AIR INLET OPENINGS IN THE LOWER AND UNDER SIDES OF EACH OF SAIDSHELLS, AND AIR OUTLET SLOTS IN THE UPPER AND TOP SIDES OF EACH OF SAIDSHELLS.